Now, before you jump on me about this, hear me out. The Crimson Tide are getting shelled by Joe Burrow and the LSU Tigers right now. The Tigers are dominating on offense, with Burrow only throwing four incomplete passes, and the Tide defense has looked battered. Right now, LSU is on the fast track to the playoff while Alabama will have some work to do.
Alabama can boost their resume with a win at Auburn. After all, that would be their best win on the schedule; Alabama's best win so far was a dominant road win at Texas A&M. However, the Aggies have fallen by the wayside, dulling Alabama's resume a bit. Alabama also won't get a chance to participate in the SEC Championship game. Granted, championship games don't factor into making the playoff (see Ohio State and Alabama). The Tide usually don't need the championship game to make the playoff. But, it does boost the case of a team looking to make the playoff.
Personally, I think Alabama should be fine. If Tua Tagovailoa improves his play and the Tide come back in the game and make it interesting, Alabama should be on the fast track to the playoff as well. However, they can't afford any more mistakes. Otherwise, they'll be washed away.
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